Funding for this research was provided by:
1.3.5 project for disciplines of excellence, West China Hospital, Sichuan University (Zy2016101)
Taipei Cheng Hsin General Hospital (CHGH105-1)
Article History
Received: 5 September 2018
Accepted: 20 September 2019
First Online: 9 October 2019
Ethics approval and consent to participate
: This study was approved by Ethics Committee of West China Hospital of Sichuan University and then registered on Clinical Trial Registry of China (OOC17011338. Peiyi Li/Wei Wei. Registered 9 May, 2017). Written informed consent from parents or legal guardians was obtained prior to enrollment.
: Not applicable.
: The authors declare that they have no competing interests.